Composition of matter for cement



Examine;

UNITED STATES PATENT OFFICE.

CARL STRAUB, OF SYRACUSE, NEW YORK.

COMPOSITION, OF MATTER FOR CEMENT, ac.

SPECIFICATION forming part of Letters Patent No. 407,135, dated July 16,1889.

Application filed October 20, 1887.

To all whom it may concern:

Be it known that I, CARL STRAUB, of Syracuse, in the county of Onondagaand State of I New York, have invented a new and useful Composition ofMatter for use in Connection with Land-Plaster in the Manufacture ofCement, Artificial Stone, &c., of which the following'is aspecification.

This invention relates to a composition of matter by the use of whichgypsum deposits of the character found in large quantities in thecounties of Onondaga and Cayuga, in the State of New York, and known aslandplaster, may be utilized for the purpose of making cement,artificial stone, wall-covering,

. &c., said deposits having heretofore been used only for fertilizingpurposes.

In preparing my composition I take one part of acid, preferablysulphuric or muriatic 2o acid and add thereto four par s o any propermaterial for retarding the action of the acid,

which material may be lue or oil either ve etable animal or mineral or acombination of glue and oil. l 0 this solution I add 2 5 about fifteenparts of water and then add a composition consisting of ten parts of anycalcined calcareous base--suoh, for instance,

as laster-ofarisand one part of silicate of potash or natron mixing somuch of the astescn e composition with the mixture of acid, itsretarder, and water as will make a thick pasty mass, after which thematerial is allowed to stand and d 'y After drying the materialispnlverizg" and mixed with calcined landlaster ten to twenty parts ofthe land-plaster Being used to one part of the composition abovedescribed.

In using the material compounded as above described, water is added inthe usual manit may be cast in molds and allowed to indurate, thusforming a good artificial stone or marble.

If the land-plaster contains a large percentash or natron could bematerially reduced,

and in some cases such potash or natron could be entirely omitted.

Having thus fully described my invention,

I claim as new and desire to secure by Letters 50 Patent- 1. The hereindescribed composition of matter, consisting olilag'd, a retarder, asglue or oil, a calcined ca ca i pp gs base, as plasterof-paris, andsilicate of potash or natron, com- 55 bined substantially in theproportions specified.

2. The herein described composition of matter, consisting of sulphuricor muriatic acid, an acid retarder, as glue or oil, calcined 6ocalcareous base, as plaster-of-paris, silicate of potash, andland-plaster,in about the proportions specified;

CARL STRAUB.

\Vitnesses:

- EDWARD KENT, J r.,

EDGAR TATE.

ner, and it is applied as ordinary plaster, or 40 age of gypsum, theamount of silicate-of pot- I

